Powertrain
generic / SAE
P2D5A
Reductant Level Sensor A/B Correlation
The signals of the reductant level sensors A and B do not correlate within the calibrated tolerance. One sensor drifts or installation offset between channels.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberD / 5A
Possible causes
- One sensor characteristic drifted high
- Harness incorrectly swapped between channels medium
Symptoms
- Check engine light or NOx warning on
- AdBlue/DEF level or quality warning
- Possible no-start countdown after ignore period
- Failed emissions inspection (NOx)
Inspection / repair
- Difficulty: easy
- DIY: possible
- Estimated cost: 80–350 €
- Estimated time: 0.3–2 h
- Component: reductant level sensor a
- Component: reductant level sensor b
- Component: scr module
- MIL / check engine light
Sources
References
sae:J2012